Two Stop Bits | Submissions from righto.com

A USB interface to the "Mother of All Demos" keyset (2025) (usb keyset interface engelbart demo retro) (righto.com)
4 points by bmonkey325 4 days ago | discuss
The Pentium contains a complicated circuit to multiply by three (2025) (righto.com)
5 points by Sidneys1 24 days ago | discuss
Two bits per transistor: high-density ROM in Intel's 8087 floating point chip (intel 8087 fpu reversing historical) (righto.com)
1 point by bmonkey325 31 days ago | discuss
The origin and unexpected evolution of the word "mainframe" (2025) (mainframe ibm 701 architecture etymology historical) (righto.com | ia)
3 points by bmonkey325 54 days ago | discuss
Pi in the Pentium: reverse-engineering the constants in its floating-point unit (pi pentium reversing floating point extraction math) (righto.com)
1 point by bmonkey325 81 days ago | discuss
Intel's $475 million error: the silicon behind the Pentium division bug (intel pentium fdiv bug oops historical) (righto.com | ia)
3 points by bmonkey325 89 days ago | discuss
Reverse-engineering precision op amps from a 1969 analog computer (reversing analog computer 60s) (righto.com | ia)
1 point by bmonkey325 91 days ago | discuss
Antenna diodes in the Pentium processor (antennae pentium power management) (righto.com | ia)
1 point by bmonkey325 124 days ago | discuss
The Pentium as a Navajo Weaving (righto.com | ia)
7 points by jordanpascal 207 days ago | 1 comment
Inside an IBM/Motorola mainframe controller chip from 1981 (ibm mainframe motorola keystone chip 80s s370) (righto.com | ia)
2 points by bmonkey325 254 days ago | discuss
Standard cells: Looking at individual gates in the Pentium processor (intel pentium design review reversing bicmos) (righto.com | ia)
3 points by bmonkey325 263 days ago | discuss
Inside an unusual 7400-series chip implemented with a gate array (7400) (righto.com | ia)
2 points by jgrahamc 362 days ago | discuss
The first microcomputer: The transfluxor-powered Arma Micro Computer from 1962 (historical computing aerospace transfluxor 1960s microcomputer) (righto.com | ia)
3 points by bmonkey325 382 days ago | discuss
Inside the mechanical Bendix Air Data Computer, part 3: pressure transducers (bendix) (righto.com | ia)
2 points by jgrahamc 435 days ago | 1 comment
Iconic consoles of the IBM System/360 mainframes, 55 years old (ibm 360 mainframes vintage) (righto.com | ia)
3 points by bmonkey325 446 days ago | discuss
Reverse-engineering the classic MK4116 16-kilobit DRAM chip (dram memory reversing historical) (righto.com | ia)
3 points by bmonkey325 460 days ago | discuss
The transparent chip inside a vintage Hewlett-Packard floppy drive (hp floppy storage historical z80 iee488) (righto.com | ia)
6 points by bmonkey325 462 days ago | discuss
Reverse engineering the Intel 386 processor's register cell (intel 386) (righto.com | ia)
3 points by jgrahamc 504 days ago | discuss
Reverse-engineering Ethernet backoff on the Intel 82586 network chip's die (righto.com | ia)
5 points by zdw 513 days ago | discuss
Examining the silicon dies of the Intel 386 processor (386 i386 80386 intel processor cpu) (righto.com | ia)
6 points by nickt 517 days ago | discuss
Examining the silicon dies of the Intel 386 processor (intel 386) (righto.com | ia)
3 points by jgrahamc 530 days ago | discuss
12-minute Mandelbrot: fractals on a 50 year old IBM 1401 mainframe (ibm 1401) (righto.com | ia)
1 point by jgrahamc 535 days ago | discuss
Undocumented 8086 instructions, explained by the microcode (8086) (righto.com | ia)
3 points by jgrahamc 535 days ago | discuss
Reverse-Engineering the Mechanical Bendix Central Air Data Computer (bendix) (righto.com | ia)
1 point by jgrahamc 535 days ago | discuss